ELECTECK 10 Pack GFCI Outlets 20 Amp, Outdoor Weather Proof (WR), Self-Test GFI Receptacles with LED Indicator, Ground Fault Circuit Interrupter, Screwless Wallplate Included, UL Listed, White

【Automatic Self-Test】The red LED light will flash 2 seconds when connecting and blinks every 30 seconds indicating a successfull self-test. If the red LED light stays ON, the test has failed and the GFCI must be immediately replaced. 【Weather Resistant】Weather Resistant (WR) GFI is constructed with advanced UV stabilized engineering to provide superior corrosion, temperature, and UV resistance, preventing from discoloration and aging, ideal for outdoor use. 【Tamper Resistant】Tamper resistant receptacle has spring-loaded shutters that close off the socket openings.